Air quality index [µg/m3]:
excellent ≤ 20
good ≤ 60
lightly polluted ≤ 100
moderately polluted ≤ 140
heavily polluted ≤ 200
severely polluted > 200
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
190054goodexcellent91excellent
180052goodexcellent81excellent
170049goodexcellent101excellent
160051goodexcellent81excellent
150049goodexcellent81excellent
140036goodexcellent61excellent
130038goodexcellent71excellent
120065lightly pollutedexcellent132excellent
110080lightly pollutedexcellent171excellent
100089lightly pollutedexcellent161excellent
090092lightly pollutedexcellent162excellent
0800100lightly pollutedexcellent183excellent
0700117moderately pollutedgood221excellent
0600125moderately pollutedgood211excellent
0500117moderately pollutedgood242excellent
0400129moderately pollutedgood252excellent
030087lightly pollutedgood211excellent
020070lightly pollutedexcellent191excellent
010069lightly pollutedexcellent171excellent
000064lightly pollutedexcellent171excellent
230066lightly pollutedexcellent172excellent
220058goodexcellent121excellent
210065lightly pollutedexcellent111excellent
200054goodexcellent91excellent